Johannes Jacob Pieter Kastelein
Known title: Chief Scientific OfficerCIK: 0002000389
Associated companies
Transaction History
| NAMS | ▲ Buy | Option Exercise | 101,409 | — | 3/9/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 101,409 | $3.1M | 3/9/2026 | View on chart |
| NAMS | ▲ Buy | Option Exercise | 94,124 | — | 3/6/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 94,124 | $2.9M | 3/6/2026 | View on chart |
| NAMS | ▲ Buy | Option Exercise | 104,467 | — | 3/5/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 104,467 | $3.2M | 3/5/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 14,692 | $514K | 2/20/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 30,789 | $1.1M | 2/20/2026 | View on chart |
| NAMS | ▲ Buy | Grant | 25,500 | — | 1/7/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 6,000 | $200K | 1/5/2026 | View on chart |
| NAMS | ▼ Sell | Open Market | 42,342 | $1.1M | 8/22/2025 | View on chart |
| NAMS | ▼ Sell | Open Market | 7,658 | $195K | 8/22/2025 | View on chart |
| NAMS | ▼ Sell | Open Market | 50,000 | $1.2M | 8/21/2025 | View on chart |
| NAMS | ▲ Buy | Grant | 19,302 | $0 | 3/26/2025 | View on chart |
| NAMS | ▲ Buy | Option Exercise | 45,481 | $0 | 3/26/2025 | View on chart |
| NAMS | ▲ Buy | Option Exercise | 150,000 | — | 3/24/2025 | View on chart |
| NAMS | ▲ Buy | Grant | 34,000 | — | 1/7/2025 | View on chart |
| NAMS | ▲ Buy | Option Exercise | 201,673 | — | 3/26/2024 | View on chart |
| NAMS | ▼ Sell | Tax Withholding | 11,197 | $254K | 3/26/2024 | View on chart |
| NAMS | ▼ Sell | Open Market | 190,476 | $4.1M | 3/26/2024 | View on chart |